Name: Dual Bead Shield Constant Tension Clamp
Brand: Murray Corporation

Constant Tension Clamp

Dual Bead Shield® Super Sealing Clamp – For air to air and coolant applications. The inner shield provides superb sealing characteristics and is safe for all soft hoses. Dual Bead Shield® & Constant Tension Clamps can also be found in the marine, agriculture, construction and off-highway markets.

Provides single spring action through the beads in the inner shield to help compensate for temperature variations and thermal cycling
Unique constant-tension design helps in prevention of turbo hose blow off.
Features a Murray exclusive Dual Bead Shield® that concentrates band sealing pressure and increases performance up to 30% compared to smooth liners.
Used in Automotive, Off-Road, Agriculture, Heavy Duty, and Marine Applications, as well as exhaust systems and certain turbo applications.
Flanged edges protect soft hoses, such as silicone, from damages.

Metal hose clamp with a screw mechanism labeled 'Murray Gold Seal'.

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Specifications

Clamp Size Chart

Technical drawing of a clamp band with dimensions, showing front, side, and cross-section views, including a 5/16 inch hex head screw and a dual-bead shield.

Part Number			"A" Diameter Range
Plated Screws	"400" Stainless	All "300" Series Stainless	Decimals		Inches		Millimeters
Plated Screws	"400" Stainless	All "300" Series Stainless	Min.	Max.	Min.	Max.	Min.	Max.
DB 16	DB 16SS	DB 16SS305	0.63	1.38	5/8	1-3/8	15.9	34.9
DB 20	DB 20SS	DB 20SS305	0.69	1.63	11/16	1-5/8	17.5	41.4
DB 24	DB 24SS	DB 24SS305	0.94	1.88	15/16	1-7/8	23.8	47.6
DB 28	DB 28SS	DB 28SS305	1.19	2.13	1-3/16	2-1/8	30.2	54.0
DB 32	DB 32SS	DB 32SS305	1.44	2.38	1-7/16	2-3/8	36.5	60.3
DB 36	DB 36SS	DB 36SS305	1.69	2.63	1-11/16	2-5/8	42.9	66.7
DB 40	DB 40SS	DB 40SS305	1.94	2.88	1-15/16	2-7/8	49.2	73.0
DB 44	DB 44SS	DB 44SS305	2.19	3.13	2-3/16	3-1/8	55.6	79.4
DB 48	DB 48SS	DB 48SS305	2.44	3.38	2-7/16	3-3/8	61.9	85.7
DB 52	DB 52SS	DB 52SS305	2.69	3.63	2-11/16	3-5/8	68.3	92.1
DB 56	DB 56SS	DB 56SS305	2.94	3.88	2-15/16	3-7/8	74.6	98.4
DB 60	DB 60SS	DB 60SS305	3.19	4.13	3-3/16	4-1/8	81.0	104.8
DB 64	DB 64SS	DB 64SS305	3.44	4.38	3-7/16	4-3/8	87.3	111.1
DB 72	DB 72SS	DB 72SS305	3.94	4.88	3-15/16	4-7/8	100.0	123.8
DB 80*	DB 80SS	DB 80SS305	4.44	5.38	4-7/16	5-3/8	112.7	136.5
DB 88*	DB 88SS	DB 88SS305	4.94	5.88	4-15/16	5-7/8	125.4	149.2
DB 96	DB 96SS	DB 96SS305	5.44	6.38	5-7/16	6-3/8	138.1	161.9
DB 104	DB 104SS	DB 104SS305	5.94	6.88	5-15/16	6-7/8	150.8	174.7
DB 116	DB 116SS	DB 116SS305	6.38	7.63	6-3/8	7-5/8	161.9	193.7
Other sizes available upon request. Available in packed and bulk stock. Other packaging configurations available. *items not stocked. special order only

Text stating More Sizes Available Upon Request inside a partial blue circular border.

PDF Specification Sheet

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Dual Bead Shield Constant Tension Clamps

Murray Corporation manufactures dual bead shield constant tension clamps, engineered to deliver consistent clamping force through thermal cycling while protecting soft hose materials from damage. The dual bead design adds a critical layer of hose protection that standard constant tension clamps do not provide, making this product the ideal choice for applications using silicone, rubber, or other soft-compound hoses.

Design and Construction

The dual bead shield constant tension clamp combines three engineering features into a single product. A spring-loaded worm drive mechanism provides constant tension capability, automatically adjusting clamping force as the hose expands and contracts with temperature changes. The dual bead shield features raised beads along both edges of the band that roll the band edge away from the hose surface, preventing the sharp band edge from cutting into or extruding soft hose materials. The worm drive screw allows for precise initial tension adjustment during installation.

This combination of constant tension and hose protection addresses two of the most common failure modes in soft-hose clamping applications: loss of seal due to thermal cycling and hose damage caused by band edge cut-in.

Key Features and Benefits

Murray's dual bead shield clamps maintain constant clamping force through thermal expansion and contraction cycles. The dual bead design protects soft hose materials from band edge damage. The spring mechanism compensates for hose relaxation over time. Stainless steel construction provides corrosion resistance. The worm drive adjustment allows precise installation torque. And the product is compatible with standard installation tools.

Applications

Dual bead shield constant tension clamps are especially well suited for applications using silicone or rubber hoses in thermally cycling environments, including automotive turbocharger and intercooler silicone hose connections, heavy-duty truck coolant and air intake systems, performance and racing cooling systems, industrial process equipment with temperature-sensitive hose connections, and marine engine cooling systems.

Contact Murray Corporation or request a quote to discuss your dual bead shield constant tension clamp requirements.

Quality and Availability

Murray Corporation manufactures all dual bead shield constant tension clamps under our ISO 9001:2015 certified quality management system. Strict dimensional and material controls ensure consistent clamping performance across production lots. With manufacturing facilities in four countries and a 98 percent on-time delivery rate, Murray provides the global capacity and inventory depth to support OEM production schedules and distributor stocking requirements. Our rigorous quality control demonstrates our commitment to delivering reliable products for even the most critical sealing applications.

Dual Bead Shield® Constant Tension Clamp